class Person: def __init__(self, first_name, last_name): self._first_name = first_name self._last_name = last_name @property def full_name(self): return f"self._first_name self._last_name"
), developers can create reusable data-validation logic that lives outside the main class body, leading to cleaner, more maintainable code. Inheritance and the Method Resolution Order (MRO) python 3 deep dive part 4 oop
Object-Oriented Programming (OOP) is a foundational paradigm in modern software development. While many programmers start with procedural scripts, mastering OOP is the critical step toward building scalable, maintainable, and elegant systems. In Python, where "everything is an object," a deep understanding of OOP isn't just useful—it's essential for advanced programming. In Python, where "everything is an object," a
class SmartThermostat: def __init__(self, temperature): self._temperature = temperature # Protected by convention @property def temperature(self): """Getter method""" return self._temperature @temperature.setter def temperature(self, value): """Setter method with validation logic""" if not (15 <= value <= 30): raise ValueError("Temperature must be between 15°C and 30°C.") self._temperature = value Use code with caution. 4. Method Types: Instance, Class, and Static where "everything is an object
class A: def process(self): print("A") class B(A): def process(self): print("B") class C(A): def process(self): print("C") class D(B, C): pass obj = D() obj.process() # Output: B Use code with caution. Inspecting the MRO
Prefixing an attribute with two underscores (e.g., __balance ) invokes name mangling. Python automatically changes __balance to _ClassName__balance inside the internal dictionary. This protects attributes from accidentally being overwritten during subclass inheritance, rather than acting as a true security wall. The Descriptor Protocol
: Binds the method to the class rather than the instance. The first argument passed is automatically the class object ( cls ).